Light therapy/phototherapy involves exposing patient to an artificial light source during winter months to relieve seasonal depression. the light source must be very bright, full spectrum light usually 2500 lux.
bulimia, sleep maintenance insomnia, seasonal depression
nausea, eye irritation, headache
glaucoma, cataract and photosenistizing medications.
R.Shreevani, 3rd edition, Jaypee Publications, Page No:131